VM: Re-format to use at most one newline between functions

runtime/vm/constants_x64.h

Index: runtime/vm/constants_x64.h
diff --git a/runtime/vm/constants_x64.h b/runtime/vm/constants_x64.h
index 09fd07cc4a835262876a1afc8d81a2fb5c8fdb2e..6acd4ba2af52bc5c5d3aacee62172d2ff8bc044c 100644
--- a/runtime/vm/constants_x64.h
+++ b/runtime/vm/constants_x64.h
@@ -28,7 +28,6 @@ enum Register {
   kNoRegister = -1,  // Signals an illegal register.
 };
 
-
 enum ByteRegister {
   AL = 0,
   CL = 1,
@@ -41,7 +40,6 @@ enum ByteRegister {
   kNoByteRegister = -1  // Signals an illegal register.
 };
 
-
 enum XmmRegister {
   XMM0 = 0,
   XMM1 = 1,
@@ -63,14 +61,12 @@ enum XmmRegister {
   kNoXmmRegister = -1  // Signals an illegal register.
 };
 
-
 // Architecture independent aliases.
 typedef XmmRegister FpuRegister;
 const FpuRegister FpuTMP = XMM0;
 const int kNumberOfFpuRegisters = kNumberOfXmmRegisters;
 const FpuRegister kNoFpuRegister = kNoXmmRegister;
 
-
 enum RexBits {
   REX_NONE = 0,
   REX_B = 1 << 0,
@@ -80,7 +76,6 @@ enum RexBits {
   REX_PREFIX = 1 << 6
 };
 
-
 // Register aliases.
 const Register TMP = R11;  // Used as scratch register by the assembler.
 const Register TMP2 = kNoRegister;  // No second assembler scratch register.
@@ -103,7 +98,6 @@ const Register kExceptionObjectReg = RAX;
 // an exception is thrown.
 const Register kStackTraceObjectReg = RDX;
 
-
 typedef uint32_t RegList;
 const RegList kAllCpuRegistersList = 0xFFFF;
 
@@ -113,7 +107,6 @@ const RegList kReservedCpuRegisters =
 const RegList kDartAvailableCpuRegs =
     kAllCpuRegistersList & ~kReservedCpuRegisters;
 
-
 enum ScaleFactor {
   TIMES_1 = 0,
   TIMES_2 = 1,
@@ -123,7 +116,6 @@ enum ScaleFactor {
   TIMES_HALF_WORD_SIZE = kWordSizeLog2 - 1
 };
 
-
 enum Condition {
   OVERFLOW = 0,
   NO_OVERFLOW = 1,
@@ -233,7 +225,6 @@ class Instr {
   DISALLOW_IMPLICIT_CONSTRUCTORS(Instr);
 };
 
-
 // The largest multibyte nop we will emit.  This could go up to 15 if it
 // becomes important to us.
 const int MAX_NOP_SIZE = 8;